Light emitting diode absorption spectroscopy for combustible gas monitoring

[摘要] A new generation of the infrared light-emitting diodes (LEDs) and photodiodes (PDs) was used to construct an open path non-dispersive infrared (NDIR) methane analyzer. It was shown earlier that its characteristics are suitable for usual alarm systems, but new measurements have shown that cross sensitivity to other alkanes is rather high.

[发布机构] Moscow Aviation Institute (National Research University), Volokolamskoe shosse 4, Moscow; 125993, Russia^1;National Research Center kurchatov Institute, Akademika Kurchatova pl. 1, Moscow; 123182, Russia^2;National Research Nuclear University, MEPhI (Moscow Engineering Physics Institute), Kashirskoe shosse 31, Moscow; 115409, Russia^3

[关键词] Combustible gas;Cross sensitivity;Infrared light emitting diodes;Non-dispersive infrared;Open-path